... digits display Counter(FH) 1, Various wave form pulse input,contact switch,encoder(NPN PNP) to used with available; ... isolation for input and output,high anti-interference.3, Output: 4 input mode with 8 output mode,up to 3 segments output with output control ... mode set freely.4, Display: 8 digits display,high precisionmdemical point floating,sensor power supply 12V/ ...